Attachment for motor vehicles



G. S. HALE ATTACHMENT FOR MOTOR VEHICLES Filed May 2, 1925.

v Snow H01 George 5. Hale KMM 64101 n as Patented Dec. 1, 1925.

UNITED STATES GEORGE S. HALE, OF TEKOA, WASHINGTON.

ATTACHMENT FOR MOTOR VEHICLES.

Application filed May 2,

To all whom it may concern:

Be it known that I, GEORGE S. HALE, a citizen of the United States, residing at Tekoa, in the county of Whitman and State of Washington, have invented certain new and useful Improvements in Attachments for Motor Vehicles, of which the following is a specification.

This invention relates to motor vehicle attachments and more particularly to a combined auxiliary and filtering tank for supplying fuel to an engine of a motor vehicle.

An important object of the invention is to provide an auxiliary tank arranged adjacent the engine of a motor vehicle and particularly adapted for use on vehicles which depend upon the flow of fuel by gravity from the tank to the engine, the auxil iary tank being adapted to contain a reserve supply which will be arranged above the level of the carburetor to supply fuel thereto when the vehicle is ascending a hill.

A further object is to provide a device of the above mentioned character wherein the auxiliary tank is provided with means for filtering thefuel supplied to the carburetor.

A still further object is to provide a tank of the above mentioned character provided with a pipe connected to the supply tank of the vehicle and having its inner end extending within the tank and terminating in a valve seat, a flexible filtering memberv being arranged within the tank and provided with a valve adapted to engage the seat of the inlet pipe to prevent the return of fuel from the auxiliary tank to the main tank when the vehicle is ascending a hill.

Other objects and advantages of the invention will become apparent during the course of the following description.

In the drawings,

Figure 1 is a side elevation of an automobile engine showing the invention applied,

Figure 2 is a central verticle sectional view through the tank,

Figure 3 is a section on line 3-3 of Figure 2, and,

Figure 1 is a detail perspective of the -filtering member.

Referring to the drawings, the numeral 10 designates automobile engine having 1925. Serial No. 27,558.

an exhaust pipe 11 and an intake manifold 12 adapted to be supplied with fuel from a carburetor 13. The vehicle is provided with a fuel supply tank 14 adapted to supply fuel to the carburetor in a manner to be described, through a pipe 15. In the present instance, I have shown the tank 14 arranged above the level of the carburetor 13 whereby the fuel from the tank will be supplied to the carburetor by gravity under ordinary conditions as will be explained.

An auxiliary tank 17 is arranged near the engine of the vehicle and preferably slightly forward of the carburetor as shown in Figure 1. In the present instance I have shown the tank 17 as being substantially cylindrical and vertically arranged but it will be obvious that I may employ any form of tank which may be desired, such as a horizontal tank. The lower end of the tank 17 is externally screw. threaded for reception within the screw threaded upper end 18 of a substantially semi-spherical lower casing 19. As shown in Figure 2 the casing sec tion 19 is provided with an internal annular shoulder 20 for a purpose to be described. The lower end of the casing section 19 is provided with a drain cook 21 whereby -sediment within the casing section 19 may be drained out when desired.

As shown in Figure 2, a slightly flexible filtering disk 22 is adapted to be arranged within the upper end of the casing 19 in en gagement with the shoulder 20 thereof. As shown in Figure 2, the lower end of the tank 17 when threaded into the upper end of the casing 19, is adapted to engage the upper face of the filtering disk to retain the latter tightly against the shoulder 20. The casing 19 is provided with an internal annular groove 23 arranged just above the filtering disk as shown. The lower end of the tank 17 is provided with openings 24: which afford communication between the groove 23 and the interior of the tank 17 A pipe 25 communicates between the groove 23 and the carburetor 18, as shown inFigure 1.

The casing 19 is provided with a boss 25 having an opening extending therethrough to receive a supply pipe 26. As shown in Figure 1, the pipe 26 forms a continuation of the pipe 15 to supply fuel from the tank 1 1 to the casing In the present instance,

- 26 to serve as a valve for controlling the passage of fuel through the pipe.

The upper end of the tank 19 is threaded for reception within a depending flange 30 formed integral with a head 31. The head 31 is preferably provided with a central internally threaded boss 32 adapted to receive the lower screw threaded end of a vent pipe 33. The pipe 32-3 is adapted to extend upwardly to a point preferably slightly above the tank 14 to prevent any fuel from flowing through the vent pipe when the tank 1i is substantially full. The upper end of the vent pipe is provided with a valve 3afor a purpose to be described.

The operation of the device is as follows: Fuel is fed by gravity from the tank 14 to the inner end of the pipe 26 as previously described.

Pressure of the fuel flowing from the inner end of the vertical pipe section 27 is adapted to lift thecen-tral portion of the 1 disk 22 slightly, this action being permitted by the sli ht flexibility of the disk.

thus is admitted to the casing 19 from whence it flows upwardly through the filtering disk 22 and into the auxiliary tank 17. Any foreign matter'in the fuel will be retained in the tank 17 and'may be drawn off periodically through the valve; 21. The height of the fuel in theta nk 17 will of course, be determined by the height of the fuel in the tank 141. The fuel will flow through the openings 24 and into the groove 23, from whence it flows to the carburetor through the pipe 25. If the vehicle starts to ascend a hill when the level of the fuel in the tank 14 is relativelylow, whereby the level of the liquid in the tank 17 will be raised above the level of that in the tank 14-, the pressure of the liquid in the tank 17 will depress the disk 22 causing the button or valve 29 to seat firmly against the flared end 28 of the pipe 27 to prevent the return flow of fuel througl'i the pipe" 26'. Thus a suflicient liquid head will be retained within the auxiliary tank 17 to efliciently operate the motor. The valve 34: is opened only sufficiently to prevent the creation of pressure or a partial vacuum in the tank 17 as the height of the fuel thereinchanges.

It is to be understood that the form of my invention herewith shown and described.

Fuel.

is to be taken as a preferred example of the same and that various changes in the shape, size and arrangement of parts may be made without departing from the spirit of the invention or the scope of the subjoined claims.

I claim:

l. A device of the character described comprising an auxiliary tank, a filtering member arranged in said tank and dividing it into inlet and outlet compartments, an inlet pipe havng one end connected with a main fuel supply tank, the opposite end of said inlet pipe extending within said inlet compartment, an outlet pipe connecting the outlet compartment with the carburetor of the'vehicle, a valve carried by said filtering member and adapted to engage the end of said inlet pipe within the inlet compartment, said filtering member being slightly flexible to permit said valve to be unseated.

2. A device of the, character described comprising an auxiliary tank having a portion intermediate its ends formed circular in cross section, a flexible filtering disk arranged in the circular portion of said tank and dividing it into inlet and outlet compartments, an inlet pipe having one end connected to a main fuel supply tank, the opposite end of said inlet pipe being arranged within the inlet compartment and provided with a valve seat, a valve carried by said filtering member and adapted to eng-agesaid valve seat, an outlet-pipe connecting the outlet compartment with the carburetor of the vehicle, and a vent pipe communicating. at its lower end with the outlet compartment, said vent pipehaving its upper end projecting above the level of the fuel in said main supply tank 8. A device of the character described comprising an auxiliary tank including inlet and outlet casings arranged in end to end relation, one of said casings being provided with an internal annular shoulder, a flexible filtering disk arranged against said. shoulder, the other of said casings being adapted to be clamped against said disk, an outlet pipe communicating, between the interior of the outlet casing and the carburetor of the vehicle, an inlet pipe connected at one end to a main fuel supply tank, the opposite end of said inlet pipe being arranged within the inlet casing and provided with a valve seat, and a valve carried by said disk and adapted to engage said valve seat.

4:. A device of the character described comprising an auxiliary tank including inlet and outlet casings arranged in end to end relation, said inlet casing being provided with an internal annular shoulder, a flexible filtering disk arranged against said shoulder, the lower end of said outlet casing being clamped against said disk, said inlet chamber being provided above said disk and outwardly of said outlet chamber with an annular space, said outlet chamber being provided with openings communicating with said annular space, an outlet pipe connected at one end to said annular space and at its opposite end to the carburetor of the vehicle, an inlet pipe connected at one end to a main fuel supply pipe and having its opposite end arranged in said inlet chamber and provided With a valve seat, and a valve 10 carried by said flexible disk and adapted to engage said valve seat.

In testimony whereof I aflix my signature.

GEORGE S. HALE. 

